DIGITAL SIGNAL PROCESSOR

PURPOSE:To eliminate a time difference between audio data and video data on a tape and an external output stage by increasing the capacity of picture memories for performing the rearrangement of video data for a delay time between the audio data and the video data. CONSTITUTION:At the time of a recording, inputted video data are processed by a filtering, etc., in an input processing circuit 3 and the rearrangement of data for one page are performed by using a picture memory 4 having a capacity for one page and a picture memory 5 having a capacity for +alpha. Since the rearrangement of data for one frame are performed with picture memories 4, 5 having the capacity for one and +alpha page, the video data can be delayed for +alpha even though a read out is performed by being advanced to a write-in to picture memories 4, 5. Rearranged video data are compressed in a compression circuit 6. Audio data are processed in an audio processing circuit 1 in which the audio data are processed and rearranged by using a memory 2. The video data from the circuit 6 and the audio data from the circuit 1 are multiplexed in time base and then recorded on the tape via an error correcting circuit 8.